StatCan
Artifactory: Mirror cdn.proj.org
The software GDAL uses the site https://cdn.proj.org/ for additional geographic projections, which it downloads automatically if it encounters a projection not saved on the system. This will obviously give an error on a non-internet connected system. The website gives mirroring instructions and says the total size of content is 575 MB. The contents of this site should be mirrored in the AAW Artifactory.
The site specifies two ways of mirroring its contents, the first is recommended if have direct s3 access (which I don't think we have), otherwise the second should be used (I don't see any reason why the second one wouldn't work on the Artifactory server):
aws s3 sync s3://cdn.proj.org .
wget --mirror https://cdn.proj.org/
With GDAL installed in a conda virtual environment, it uses /etc/share/proj as the projections directory (like /etc/share/proj/us_nga_egm96_15.tif). The /etc/share/proj is writable by the AAW user, I'm able to put projection files there which then make the corresponding projections usable by GDAL.
More generally (see https://proj.org/resource_files.html), on Linux it will use ${XDG_DATA_HOME}/proj if XDG_DATA_HOME is defined, else ${HOME}/.local/share/proj. For me in the conda virtual environment with GDAL installed XDG_DATA_HOME is /etc/share/proj.
